Weighing-scale.



G. SIRCH. WEIGHIN G SCALE.

APPLICATION FILED AUG. 10, 1914. 1,145,928. PatentedJuly 13, 1915.

2 SHEETS-SHEET l.

' C. SIRCH.

I WEIGHING SCAtE.

APPLICATION FILED AUG-10.1914.

Patented July 13, 191-5.

' 2 SHEETS-SHEET 2.

anwwlioz I} i I Application filed Aug st 10, 914. Serial No, 855,974.

"York, have invented a' certain new and ImsTAT s PATENT OFFICE.

CHARLES SIRCH, OF NEW .YORK, N; Y.

To aZZ whom it concern 'Be it known "tha citizen of the UnitedStates,and a'resident of New York city,,county and State of New proved"Weighing-Scale, of which the fol lowing is a specification. V

- This invention relates to a Weighing scale, of the class in which arotating pointer indi- 'cates the weight to be ascertained upon a dial.By. my invention all springs with whichthis class of scales was. usuallyprovided are omitted, and anaccurate-work-ing and delicate adjustmentare assured.

In the accompanying drawing: Figure 1 is a face view of a scaleembodying my invention', with. he dial and pointer omitted;

' 2 a horizontal section of the scale; Fig. 3a section on line 33 Fig.1; and Fig. 4 a vertical section on line 44, Fig. 1.

The casing 10 of the scale is of circular form, andwith the embodimentshown is provided with windows 11, and dials 12 on;

both of its sides, though the invention may of course be also applied tosingle face scales.

The arbor 13 carrying the pointers 14, is journaled in. a bearing 15 andcarries a pinion 16. This pinion is engagedby a rack 17, having a,bentheel 18,,which is counterweighted at 19. From heel 18 depends a bar orhanger 20,into which is screwed an eyedv wire 21, to which a scale panor hook (not show/n)- is adapted to be coupled.

lVith'in casing 10' is mounted acircular frame 22 from which depend apair of bars 23 each carrying a V shaped bearing 24. Each bearing 24, isengaged by a knife-edge fulcrum 25, of a balance beam 26, the two beams26 being alike in all respects, and extending outwardly in oppositedirections from the center of the scale, where they are 'operativelyconnected to bar 20, and conse- I quently to theload in the followingmani 'ner: Each beam 26 is furnished at its inner ot'ed to the upperarmpf a yoke orsquare frame 29, the lower arm of WhlCl'l'lS rigidly endwith a knife edge fulcrum 27- that engages a forked apertured link28,constituting a bearing.- One of the links 28, is pivsecured to bar 20The second link'28, is engaged by a hook 30, the bent shank 31 of whichis pivoted to bar'20, at 32, some distance below yoke 29. By means ofthe independent connections described, the two Specification of LettersPatent.

t I, -CHARLES Smcn, a

wmenINs-scALE.

Patented July 13, 1915.

movement imparted tothem by the load, so that any binding is effectivelyprevented.

p The knife edge 25 of each beam 26 is-encompassed'by a yoke 33, towhich is rigidly attached a comparatively heavy load-comb terbalancingweight 34, which is axially alined withthe knife edge-and normallysustains the beam in a substantially horizontal POSltlOIL- At adistancebeyond weight 34, there depends from beam 26, a

rod 35, carrying a lighter'adjustable weight 36, which may be setwhenever the pointer does not truly indicate the zero mark. ,At. itsextreme outer end there depends from beam 26,xa pivoted screw 37 that isengaged .by a still lighter adjustable weight 38,

which permits the'deviceto beset, to differently heavy pans, hooks,etc., suspended from wire 21.

If desired the scale maybe provided with a cylinder 39, depending fromthe top of frame 22, and furnished with a piston 40,-

which is by link 41 connected to hanger 20;.

The upperair chamber of the piston, has a port, the size of which maybeadjusted by thus operating in the manner of a dash pot.

In order to prevent weights 34 from moving when the scale is carriedabout, they are adapted to be engaged by set screws 43 journaled inbearings 44 that extend inwardly from frame I claim: 1. A weighing scalecomprising a pair of fixed bearings, a pair of oppositely extend ingbeams directly supported thereon and means of a beveled screw plug 42,the device edge fulcrums, and independent means for securing the linksto the hanger.

2. A weighing scale comprising'a pair of fixed bearings, 22 pair ofoppositely extending beams directly supported thereon, y'okes secured tothe beams and straddling the bearings, weights depending from the yokes,

. a load sustaining hangerga pointer operable thereby, and independentmeans for securing the inner ends of the beams to the hanger.

2 i A W 1,145,928

3. A weighin" scale comprising a. frame, a hanger, a POintBIIQOPGFabIGthereby,- and in pair of bardepending thenefrom, a pair ofdependent meanfor securing the inner ends. fixed bearings car :d'by the bar s,-a pairof of the beams to the ban er. oppositely 'extencing beams directly s'upv v C ARLES SIROH.

5 ported by the bearings, yokes Secured to the -Witnesses: I

beams and straddling the bearings, weights FRANK v. BRIESEN, dependingfrom'the yokes, a load-sustaining MADELI E HIRscH.

W 4 a v t c0515; of this patent may be obtained for five cents each, byaddressing-the Commissioner of Patents, Washingt0n,'D. 0.

